Ironically, it all starts from the Consultants who treat everyone like crap, thus every reg/f2 etc. Deflect that anger at the person further down the ladder.
Medics are up themselves, I can safely say this as a medical student myself, they are however going to be miserable when working. Junior doctors are incredibly unfairly treated though, by the state, by their seniors and by the general public. Let them treasure their vain nature before it gets decimated by the consultants.